The above practices are widely adapted from the Latin rite practices prevailant in India. The archdiocese of Chenganassery has made attempts to:
- Use Unleavened bread like other Eastern churces
- Distribute both bread and wine
- Priests and Deacons only are allowed to distribute communion
- People approach the priest and not the other way round.
Not to be too nit-picky, but I believe you are mistaken about the use of unleavened bread in Eastern churches. In the Byzantine rite (which includes the Ruthenians, Melkites, and Ukrainians among others), the bread is always leavened. It is the Latin rite which uses the unleavened (i.e., “wafer”) bread. The Orthodox and Coptic churches also use leavened bread. There are equally compelling reasons for both uses. Yeast or leaven can be representative of life. Our living and life-giving God is present in the Holy Eucharist.
But leaven can also be a metaphor for sin. That is one reason why Jews rid their homes of any leavened bread before Passover and eat only unleavened bread in the celebration of Passover. (Of course, there is also the obvious reason that at the original Passover, they were making haste and did not have time to let the bread rise.)
I don’t know if the Latin usage of using unleaven bread is from this analogy or something more mundane like economy and ease of storage which then become a Custom and then becomes “because we have always done thus.”
Marina